Electronic Stability Control

Vehicle stability control is one of the major advancements in driver and passenger safety to be implemented since the inception of the modern the automobile. A two axis accelerometer aligned with 1 axis front to back and the other aligned from side to side and a Yaw Gyro are used to measure vehicle motion (inertial measurements). The inertial measurements are compared to steering wheel angle, wheel speed, break and acceleration pedal position (vehicle indicator measurements) to determine if the vehicle  is doing what the driver is asking it to. If the system determines the inertial measurement and vehicle indicator measurements are not consistent, the electronic stability control system will take actions to try and bring the vehicle back in control. Actions include applying break to one or more wheel or shifting power from a slipping wheel to another wheel.

Critical Performance Parameters for Electronic Stability Control Application are:

  • 0g Offset drift over temperature
  • Sensitivity drift over temperature
  • Immunity to Vibration and Shock events

Accelerometers for Electronic Stability Control

 

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Memsic Electronic Stability Control
Vehicle stability control is one of the major advancements in driver and passenger safety